This workshop manual covers Mitsubishi forklift trucks, specifically models HLF 15-5, HLF 18-5, HLF 20-5, HLF 25-5, and HLF 30-5. These forklifts are powered by LPG (Liquefied Petroleum Gas) and utilize the robust 4G6 engine family, featuring either the 2.0 L 4G63 or the 2.4 L 4G64 inline 4-cylinder SOHC engine. Known for their reliability and efficient operation in industrial environments, these machines are engineered for demanding material handling tasks. The 4G6 series engines are water-cooled with a wet sump lubrication system and employ electronic ignition for consistent performance. This comprehensive workshop manual provides essential information for the maintenance and repair of your Mitsubishi forklift. It details critical procedures, technical specifications, and troubleshooting guidance for the 4G63 and 4G64 engines, as well as the automatic transmission. Covered topics include recommended maintenance schedules for oil changes, filter replacements, and tune-up components such as spark plugs and timing belts. Adhering to the guidelines within this manual will ensure optimal performance, longevity, and safe operation of your forklift.